Top Definition
Someone who talks a lot about absolutely nothing or talks in circles.
Glenn talked for an hour about Mike and said nothing. He sure is a blowcock.
by JYP February 05, 2010

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Someone (usually a guy) who talks big about things to make themself look better. What he can do, buy, etc. Usually what they are saying is not true at all, or it's a very large exaggeration of the truth.
James was being such a blowcock again, ranting about how many women he's been with and what type of car he drives.
by Pork and Beans September 20, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt